Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
STEREOSCOPIC VISION RECOGNITION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/073736
Kind Code:
A1
Abstract:
Disclosed is a stereoscopic vision recognition system with which generation of crosstalk at oblique view angles can be reduced. The stereoscopic vision recognition system includes: a video display device which comprises a first linear polarisation element provided on the observer side; a first λ/4 sheet which is provided on the observer side of the first linear polarisation element; and active shutter spectacles which comprise, from the outside and in the following order, a second λ/4 sheet, a liquid crystal cell, and a second linear polarisation element. If the angle made by the transmission axis of the first linear polarisation element and the in-plane retardation axis of the first λ/4 sheet is defined as φ1, and the angle made by the transmission axis of the second linear polarisation element and the in-plane retardation axis of the second λ/4 sheet is defined as φ2, 40°≤φ1≤50° and 130°≤φ2≤140° or 130°≤φ1≤140° and 40°≤φ2≤50° are satisfied and the NZ coefficient of the first λ/4 sheet is less than 1.

Inventors:
HASEGAWA MASAHIRO
SAKAI AKIRA
Application Number:
PCT/JP2011/076773
Publication Date:
June 07, 2012
Filing Date:
November 21, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHARP KK (JP)
HASEGAWA MASAHIRO
SAKAI AKIRA
International Classes:
G02F1/13; G02B30/25; G02F1/1335; G02F1/13363; G02F1/1347; H04N13/04
Domestic Patent References:
WO2010098341A12010-09-02
Foreign References:
JPH10268233A1998-10-09
JPH10232365A1998-09-02
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
Download PDF:
View/Download PDF      PDF Help
Claims:



 
Previous Patent: TRANSMISSION CONTROL DEVICE

Next Patent: ULTRAFINE POLYAMIDE FIBER, AND MELT-SPINNING METHOD AND DEVICE THEREFOR